METHOD OF SIMPLEX COMMUNICATION THROUGH CABLE LINE OPTICAL FIBER Russian patent published in 2018 - IPC H04B10/00 

FIELD: physics.

SUBSTANCE: invention relates to communication techniques, in particular to methods for transmitting information over communication links, namely, low-speed data transmission over optical fibers of cable lines. In a method for simplex communication through optical fiber of a cable line, comprising the steps of: introducing optical radiation from a coherent optical radiation source into an optical fiber of an optical fiber cable, act through the fiber optic cable to the optical fiber on the local portion of the cable line with an acoustovibration signal from the transmitter located some distance from the fiber optic cable, as a result of which the optical radiation propagating in the optical fiber is phase modulated by a vibroacoustic signal and the modulated optical radiation is received by a phase-sensitive coherent receiver by means of which the transmitted signal is extracted. In this case, the optical radiation from the coherent optical radiation source is phase modulated by a constant period signal before being introduced into the optical fiber, and the signal propagating along the optical fiber is received by the phase-sensitive coherent receiver at the far end of the cable line.

EFFECT: technical result consists in expanded field of application.

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